共查询到20条相似文献,搜索用时 15 毫秒
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Kiyoshi Ohishi Masanori Ohnishi Toshimasa Miyazaki 《Electrical Engineering in Japan》1997,118(4):58-69
This paper proposes a simple and robust robot motion control method using a robust velocity controller. The robust velocity controller is based on H∞ control theory, and is called H∞ velocity controller. The H∞ velocity controller based motion control method is completely equivalent to the robust acceleration control method using the H∞ acceleration controller, but it has simpler structure. Therefore, the proposed system can realize a fine robot motion control easily. To confirm the validity of the proposed method, this paper realizes the hybrid control of position and force for a multijoint robot manipulator. Further, the simple realization of hybrid control is proposed considering the attitude of the robot manipulator. This system achieves hybrid control of position and force of the robot manipulator while maintaining a perpendicular attitude to the target environment. The experimental results in this paper show that the proposed system has the desired force and position response to the target environment. © 1997 Scripta Technica, Inc. Electr Eng Jpn, 118 (4): 58–69, 1997 相似文献
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Xudong Li Jianyong Yao Changsheng Zhou 《International Journal of Adaptive Control and Signal Processing》2017,31(11):1544-1566
Most previous advanced motion control of hydraulic actuators used full‐state feedback control techniques. However, in many cases, only position feedback is available, and thus, there are imperious demands for output‐feedback control for hydraulic systems. This paper firstly transforms a hydraulic model into an output feedback–dependent form. Thus, the K‐filter can be employed, which provides exponentially convergent estimates of the unmeasured states. Furthermore, this observer has an extended filter structure so that online parameter adaptation can be utilized. In addition, it is a well‐known fact that any realistic model of a hydraulic system suffers from significant extent of uncertain nonlinearities and parametric uncertainties. This paper constructs an adaptive robust controller with backstepping techniques, which is able to take into account not only the effect of parameter variations coming from various hydraulic parameters but also the effect of hard‐to‐model nonlinearities such as uncompensated friction forces, modeling errors, and external disturbances. Moreover, estimation errors that come from initial state estimates and uncompensated disturbances are dealt with via certain robust feedback at each step of the adaptive robust backstepping design. After that, a detailed stability analysis for the output‐feedback closed‐loop system is scrupulously checked, which shows that all states are bounded and that the controller achieves a guaranteed transient performance and final tracking accuracy in general and asymptotic output tracking in the presence of parametric uncertainties only. Extensive experimental results are obtained for a hydraulic actuator system and verify the high‐performance nature of the proposed output‐feedback control strategy. 相似文献
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Sajjad Fekri Michael Athans Antonio Pascoal 《International Journal of Adaptive Control and Signal Processing》2006,20(10):519-579
We overview recent progress in the field of robust adaptive control with special emphasis on methodologies that use multiple‐model architectures. We argue that the selection of the number of models, estimators and compensators in such architectures must be based on a precise definition of the robust performance requirements. We illustrate some of the concepts and outstanding issues by presenting a new methodology that blends robust non‐adaptive mixed µ‐synthesis designs and stochastic hypothesis‐testing concepts leading to the so‐called robust multiple model adaptive control (RMMAC) architecture. A numerical example is used to illustrate the RMMAC design methodology, as well as its strengths and potential shortcomings. The later motivated us to develop a variant architecture, denoted as RMMAC/XI, that can be effectively used in highly uncertain exogenous plant disturbance environments. Copyright © 2006 John Wiley & Sons, Ltd. 相似文献
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Sajjad Fekri Michael Athans Antonio Pascoal 《International Journal of Adaptive Control and Signal Processing》2007,21(1):1-30
We evaluate the performance of the robust multiple model adaptive control (RMMAC) methodology by considering a mass–spring–dashpot (MSD) system subject to high-frequency disturbances that strongly excite all its lightly damped oscillatory modes. The results demonstrate the superior performance of the RMMAC and its variant RMMAC/XI architecture for a much more difficult adaptive control problem than that designed and analysed in Reference (Int. J. Adaptive Control Signal Processing, in press). Copyright © 2006 John Wiley & Sons, Ltd. 相似文献
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在简要介绍了永磁无驯直流电机(BLDC)的运行原理和调速方式的基础上,提出了一种新颖的采用单一DSP实现多轴BLDC运动控制系统结构,并借助于DSP和FPGA和三台400W的永磁BLDC成功地实现了该系统。与传统的多轴运动控制系统是由多个单轴运动控制系统相比,该系统结构具有结构简单、紧凑接线较少等特点,特别适用于小型、多轴控制设备如视频检测机、家庭机器人等。样机实验结果表明:该系统具有良好的动、静态性能。 相似文献
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基于永磁直线同步电机的光刻机掩模台鲁棒自适应神经网络控制 总被引:1,自引:0,他引:1
针对光刻机掩模台宏动永磁直线同步电机(PMLSM)提出一种鲁棒自适应神经网络轨迹跟踪补偿控制策略。该策略的主要特点是采用径向基函数(RBF)神经网络实时在线进行模型参数不确定性和各种外界非线性扰动的估计。为了验证策略的效果,建立基于参数不确定性和外界非线性扰动的掩模台宏动PMLSM模型,并针对此模型进行控制策略的规划、推导和稳定性理论分析,分析结果说明该策略可以保证位置和速度跟踪误差的收敛性。通过在光刻机掩模台上进行的五阶S曲线跟踪控制实验验证了此控制策略的实际控制效果,实验结果显示跟踪准确度达到了满意的效果。由于此控制策略的最大优点是不需要对实际物理系统参数和难于测量的外界不确定性扰动做精准的建模,所以非常适合应用在超精密运动控制领域。 相似文献
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针对330MW单元机组的仿真模型,绘出了其相对非线性测度曲线,并据此得出了单元机组在多个典型工作点的线性化模型;然后对线性化模型设计动态解耦控制器,并用T-S模糊模型合成出协调控制系统的全局控制器;最后对此协调控制系统的全局稳定性进行了证明。仿真研究证明了控制算法设计的有效性。 相似文献
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EDUARDO F. CAMACHO MANUEL BERENGUEL 《International Journal of Adaptive Control and Signal Processing》1997,11(4):311-325
This paper presents the application of a robust adaptive control scheme to a distributed collector field of a solar power plant. The major characteristic of a solar power plant is that the primary energy source, solar radiation, cannot be manipulated. Solar radiation varies throughout the day, causing changes in plant dynamics and strong disturbances in the process. The controller uses a robust identification mechanism combined with a finite horizon receding controller to cope with the process dynamics having bounded uncertainties. The controller has been tested using a proven non-linear computer model of the field. Results obtained in the real plant are also shown. © 1997 John Wiley & Sons, Ltd. 相似文献
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基于进化算法的鲁棒控制研究进展 总被引:2,自引:0,他引:2
进化算法是增减自然遗传学机理基础上的参数搜索方法,本文综述了近年来基于进化算法的鲁棒控制系统设计方面的研究情况。首先简单介绍了进化算法及其改进,讨论了进化算法以及传统优化方法的优点和不足;然后阐述了如何将进化算法应用到不同的鲁棒方法当中,论述了进化算法在控制系统鲁棒性设计,同时镇定控制、H^∞次优控制器设计、H^∞权函数选择、特征结构配置、μ综合理论以及定量反馈理论中的应用成果;最后指出今后进一步 相似文献
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运动控制器的发展与现状 总被引:9,自引:0,他引:9
阐述了运动控制器的涵义,并从实现运动控制功能的基本方法、运动控制器的各种类型、运动控制策略和发展趋势等几个方面综合介绍了运动控制器的发展状况。 相似文献
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Oscar Barambones Aitor J. Garrido Izaskun Garrido 《International Journal of Adaptive Control and Signal Processing》2008,22(5):440-464
In this paper, a speed estimation and control scheme of an induction motor drive based on an indirect field‐oriented control is presented. On one hand, a rotor speed estimator based on an artificial neural network is proposed, and on the other hand, a control strategy based on the sliding‐mode controller type is proposed. The stability analysis of the presented control scheme under parameter uncertainties and load disturbances is provided using the Lyapunov stability theory. Finally, simulated results show that the presented controller with the proposed observer provides high‐performance dynamic characteristics and that this scheme is robust with respect to plant parameter variations and external load disturbances. Copyright © 2007 John Wiley & Sons, Ltd. 相似文献